Have a unified list of themes

theme.py

@@ -11,6 +11,15 @@ from utils import loadJson
 from utils import saveJson
 
 
+def getThemesList() -> []:
+    """Returns the list of available themes
+    Note that these should be capitalized, since they're
+    also used to create the web interface dropdown list
+    and to lookup function names
+    """
+    return ('Default', 'Light', 'Purple', 'Hacker', 'HighVis')
+
+
 def setThemeInConfig(baseDir: str, name: str) -> bool:
     configFilename = baseDir + '/config.json'
     if not os.path.isfile(configFilename):
@@ -263,21 +272,18 @@ def setThemeLight(baseDir: str):
 
 def setTheme(baseDir: str, name: str) -> bool:
     result = False
-    if name == 'purple':
-        setThemePurple(baseDir)
-        result = True
-    elif name == 'light':
-        setThemeLight(baseDir)
-        result = True
-    elif name == 'hacker':
-        setThemeHacker(baseDir)
-        result = True
-    elif name == 'highvis':
-        setThemeHighVis(baseDir)
-        result = True
-    else:
+
+    themes = getThemesList()
+    for themeName in themes:
+        if name == themeName.lower():
+            themeFunctionName = setTheme + themeName
+            themeFunctionName(baseDir)
+            result = True
+
+    if not result:
         # default
         setThemeDefault(baseDir)
         result = True
+
     setCustomFont(baseDir)
     return result

webinterface.py

@@ -70,6 +70,7 @@ from happening import thisWeeksEventsCheck
 from happening import getCalendarEvents
 from happening import getTodaysEvents
 from git import isGitPatch
+from theme import getThemesList
 
 
 def getBlogAddress(actorJson: {}) -> str:
@@ -1151,20 +1152,15 @@ def htmlEditProfile(translate: {}, baseDir: str, path: str,
             '..." style="height:200px">' + moderators + '</textarea>'
         moderatorsStr += '</div>'
 
+        themes = getThemesList()
         themesDropdown = '<div class="container">'
         themesDropdown += '  <b>' + translate['Theme'] + '</b><br>'
         themesDropdown += '  <select id="themeDropdown" ' + \
             'name="themeDropdown" class="theme">'
-        themesDropdown += '    <option value="default">' + \
-            translate['Default'] + '</option>'
-        themesDropdown += '    <option value="light">' + \
-            translate['Light'] + '</option>'
-        themesDropdown += '    <option value="purple">' + \
-            translate['Purple'] + '</option>'
-        themesDropdown += '    <option value="hacker">' + \
-            translate['Hacker'] + '</option>'
-        themesDropdown += '    <option value="highvis">' + \
-            translate['HighVis'] + '</option>'
+        for themeName in themes:
+            themesDropdown += '    <option value="' + \
+                themeName.lower() + '">' + \
+                translate[themeName] + '</option>'
         themesDropdown += '  </select><br>'
         if os.path.isfile(baseDir + '/fonts/custom.woff') or \
            os.path.isfile(baseDir + '/fonts/custom.woff2') or \